Stability Studies of Selected Phenoxyacid Herbicides in Water Samples and Determination of Their Transformation Products D. Da ˛ browska, 1 A. Kot-Wasik, 2 J. Namies ´nik 2 1 Polish Geological Institute, Central Chemical Laboratory, 4 Rakowiecka Str., 00-975 Warsaw, Poland 2 Department of Analytical Chemistry, Chemical Faculty, Gdan ´ sk University of Technology, 11/12 Narutowicza Str., 80-952 Gdan ´ sk, Poland Received: 27 January 2006/Accepted: 31 May 2006 Correspondence to: D. Da ˛browska Bull. Environ. Contam. Toxicol. (2006) 77:245–251 © 2006 Springer Science+Business Media, Inc. DOI: 10.1007/s00128-006-1056-1 245